So the college I'm attending is having a math placement test next week and they sent a review packet for us to do. I've got most of them down, but there are a few problems that I couldn't find help in from either the review packet or my old math text books. If you could help, that would be greatly appreciated.
1. A factor of (4/9)y^2 - 81 = ?
2. If 2x + ax/b = 2, then x = ?
3. (16x^8y^-4)^3/4 = ?
4. x^(2-k) / x^(5-2k) = ?
5. A factor of x^4y^2 - 2x^3y^3 - 3x^2y^4 = ?
[[The equation should read x to the power of 4 times y to the power of 2 minus... etc.]]
6. log base 1/2 [1/16(1/2)^-9] = ?
7. (x/y) - (y/x) / x^2-y^2 = ?
8. A factor of 12x^2+x-6 =?
9. One of the roots of x^2+2x-5=0 is ?
[I'm thinking using the quadratic equation, but my answer didn't come out in any of the selections.]
10. If log z = 2/3 log x-2 log y, then z=?
Really appreciate if you could help answer all of them (Show some work so I understand please) by Sunday, since the test is Monday! Thanks!
2007-06-08
20:07:46
·
3 answers
·
asked by
Anonymous
in
Mathematics